26212531 has 2 divisors, whose sum is σ = 26212532. Its totient is φ = 26212530.

The previous prime is 26212513. The next prime is 26212553. The reversal of 26212531 is 13521262.

Together with previous prime (26212513) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (26212553) can be obtained adding 26212531 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26212531 is a prime.

It is a super-2 number, since 2×26212531² = 1374193562851922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26212591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13106265 + 13106266.

It is an arithmetic number, because the mean of its divisors is an integer number (13106266).

Almost surely, 2^26212531 is an apocalyptic number.

26212531 is a deficient number, since it is larger than the sum of its proper divisors (1).

26212531 is an equidigital number, since it uses as much as digits as its factorization.

26212531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 26212531 is about 5119.8174772154. The cubic root of 26212531 is about 297.0546253449.

Adding to 26212531 its reverse (13521262), we get a palindrome (39733793).

The spelling of 26212531 in words is "twenty-six million, two hundred twelve thousand, five hundred thirty-one".